They have spread in Ontario and Quebec and are now found in 24 U.S. states as far west as California. In 2013, zebra mussels were discovered in Lake Winnipeg, while in 2016, invasive mussels were confirmed in the Tiber Reservoir in Montana. Gail Wallin, executive director of the Invasive Species Council of British Columbia, said to date, there has been no reported introduction of live zebra mussels into B.C. lakes or waterways, but other invasive species have caused serious damage. Wallin said some of the most serious invasive species were originally sold as pets or plants for water gardens and aquariums.